San Diego Chargers left tackle King Dunlap exited the game late and now we know why. According to the U-T San Diego’s Michael Gehlken, Dunlap sustained a concussion in the fourth quarter.

If Dunlap can’t play next week it won’t be good for the Chargers. The team is already incredibly thin at offensive line with guard Chad Rinehart also possibly set to miss some time with turf toe. It is also unknown when tackle D.J Fluker will return from his own concussion.

If the team starts the same lineup it was using at the end of the game, Chargers’ fans and Philip Rivers are going to be reminded of last year that saw Rivers on his back and throwing off his back foot more often than not.